20188100

素因数分解:

$2^2\times 5^2\times {\mathrm{201881}}^1$

素因数の和:201895

約数の個数: 18

約数和(自身を含む): 43808394

約数和(自身を除く): 23620294

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 201881, 403762, 807524, 1009405, 2018810, 4037620, 5047025, 10094050, 20188100]

約数ペア:

[(1, 20188100), (2, 10094050), (4, 5047025), (5, 4037620), (10, 2018810), (20, 1009405), (25, 807524), (50, 403762), (100, 201881)]